Actuating mechanism for ore-concentrators.



PATENTED OCT. 24, 1905.

No. 802,3M. V

E. DEISTER. AGTUATING MECHANISM FOR ORE GONGENTRATORS.

APPLIUATION FILED MAR. 28, 1904 A 770/?NE Y EMIL DEISTER, OF FORT WAYNE, INDIANA.

ACTUATHNIGI lVlIEGl-lANl$ltll FOR OIF HE OONCENTHATORS.

No. eoasva.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed March 28, 1904. $erial No 200,266.

To ti/Z whm'rt it may concern.-

Be it known that I, EMIL Dnrs'rns, a citizen of the United States, residing at Fort WVayne, in the county of Allen and the State of Indiana, have invented certain new and useful Improvements in Aetuating Mechanism for Ore- Concentrators, of which the following is adescription, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in actuating mechanism for concentrators and the like; and the object thereof is to provide mechanism of this class for transmitting reciprocal motion and with but few wearing parts and which can be readily adjusted so as to im part a more or less differential movement to the concentrating apparatus.

1 accomplish my object by the construction illustrated in the accompanying drawings, in Wl1i0l1 Figure 1 is a side elevation showing a concentrating-table with my driving mechanism attached thereto. Fig. 2 is a bottom plan of the driving-head, showing a partial cross-seetion.

Similar numerals of reference indicate corresponding parts in both views, and, referring now to the same, 1 is a concentrating-table, which may be of any suitable type mounted to be reciprocally shaken, and 2 is a rotary drivingshaft having fixed thereon an eccentric 3. A bracket 4: is rigidly secured to the concelitrating-table, and the tapered opening 5 extends longitudinally through said bracket. A concavity 6 is made in one end of the bracket, the center of which ranges in line with that of said opening.

7 is a block havinga sleeve 8 extending from one side thereof and in line with the opening 5 in said bracket and also a semispherical protuberance 9, which is adapted to be adjustably seated in the said concavity 6 of said bracket. The said block is connected to said bracket by means of bolts 10, which are fixed in suitable cars 11, extending from the sides of the bracket, and which range through slotted lugs 12, extending from the sides of said block. Springs 13 are interposed between the heads of said bolts and said slotted lugs and are adapted to press said block toward said bracket, so that the protuberance 9 will retain its seat in said concavity and at the same time allow said block to tilt relative to said bracket. A driving-rod 14 is connected at one of its ends to the eccentric 3 to be actuated thereby, and the other end thereof extends through the tapered opening in said bracket and through said block and sleeve. A collar 15 is mounted upon the said driving-rod and has a screw-threaded connection therewith and ranges over the sleeve 8 and is adapted to slide thereon. A buffer-1o, preferably of rubher, is interposed between the said collar and said block 7. The said collar is adapted to be adjusted lengthwise upon said driving-rod by means of its screw-threaded connection therewith, and a nut 17 is arranged upon the driving-rod next the collar and serves to hold said collar in adjusted position. A flanged sleeve 18 is loosely mounted upon the drivingrod at a point thereon opposite the block 7 respecting the bracket, so that said bracket intervenes the said sleeve 18 and block. A coiled spring 19 surrounds the d riving-rod and with its respective ends acting against the bracket and the flanged sleeve 18. A handwheel 20 is mounted upon the driving-rod 1 1 and has screw-threaded connection therewith, so as to be adjusted thereon by turning the same. A nut 21 is arranged upon said driving-rod next said wheel and serves to hold the latter in adjusted position. It will appear that by adjusting said wheel the flanged sleeve 18 will be moved accordingly, and the stress of said spring against the bracket 1 and sleeve 18 will thereby be increased or decreased, according as the wheel is adjusted upon the driving-rod. The bracket 4 is slightly recessed, as shown at 22, so as to afford a seat for the abutting end of the spring 19.

In the operation of this invention the driving-rod 1 1 is set in reciprocating motion lengthwise by means of any suitable driving mechanismsuch, for example, as the eccentric 3. During the forward stroke of the driving-rod, as indicated by the arrow, the table 1 will be moved in the same direction because of the action of the spring 19 against the bracket 41:, and during the return movement of the driving-rod the table will be moved backward b y the action of the collar 15 against the buffer 16. The said spring will become compressed, more or less, as the table approaches the end of its backward movement and during the forward stroke of the drivingrod, and when the said spring is so compressed the collar 15 will be carried from the buffer to an extent corresponding as the said spring is compressed by the forward movement of the driving-rod relative to that of the table,

and said collar will be brought into forcible contact with the buffer when the motion of the driving-rod is reversed, and the motion of said table will thereby be reversed with more or less suddenness, according to the extent of longitudinal play of the driving-rod relative to the bracket. The extent of said longitudinal play of the driving-rod may be decreased by increasing the stress of the spring 19. as by adjustment of the hand-wheel 20. It will be understood that the reverse of the table from its backward to its forward motion will be eased by the compression of the spring 19, due to the previous reverse of the motion of the driving-rod and the momentum of the table, and that the reverse of the table from its forward to its backward movement will be comparatively sudden, due to the striking of the collar 15 against the buffer and also to the less yielding tendency of the bufier compared with that of the spring 19. Therefore the motion of the table will be differential to an extent proportionate as the spring is more yielding than the buffer, contemplating, of course, the shock occasioned by the striking of the said'collar against the buffer.

Another feature of this invention is in the relation of the driving-rod with the bracket 4. It will be seen that the driving-rod is carried by theblock 7, in which it is adapted to slide longitudinally to the extent admitted by the yielding of the spring 19 and butter, and as the block, because of its peculiar connection with the bracket, is adapted to tilt the driving-rod does not bind in connection with the bracket nor with the block, which would 1 otherwise occur because of the-angularity of the driving-rod incidental to the motion of the actuating crank or eccentric 3. Furthermore, the tapered opening 5 in said bracket is made ample to afford clearance for said driving-rod when actuated.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In actuating mechanism for concentrating-tables and similar devices, a table suitably mounted to be vibrated; a bracket fixed to said table; a block adjustably seated against said bracket; bolts having loose connections with said block and rigidly fixed in said bracket; springs in connection with the respective bolts and acting against said block toward said bracket; a reciprocating drivingrod having a sliding connection with said block; a butter having actuating connection between said drivingrod and block; and a spring in connection with said driving-rod and acting against said bracket.

2. In mechanism or the class described, a table suitably mounted to be vibrated; a bracket fixed to said table and having a concavity in one side thereof and an opening in line with the center of said concavity; a reciprocating driving-rod extending through said opening; a block loosely mounted upon said rod and having a semispherical protuberance on one end thereof which seats in said concavity; a collar fixed upon said rod; a buffer interposed between said collar and block; and a spring having engagement with said rod and acting against the side of said bracket opposite said block.

In testlmony whereof I aifix my signature in presence of two witnesses.

EMIL DEISTER.

Witnesses:

W. G. BURNS, VVILLIAM C. SLATER. 

